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Title:
METHOD FOR MANUFACTURING POLISHING PAD WINDOW, AND POLISHING PAD WINDOW MANUFACTURED THEREBY
Document Type and Number:
WIPO Patent Application WO/2023/140450
Kind Code:
A1
Abstract:
The present invention provides a method for manufacturing a polishing pad window, a polishing pad window manufactured by the method, and a polishing pad including the window, the method comprising the steps of: a) producing a mixture by mixing a curing agent and a polyurethane prepolymer having a temperature of at least 50°C but not more than 100°C; b) injecting the mixture, to a thickness of 5 mm or less, into a mold heated to a temperature of at least 30°C but not more than 100°C; c) demolding a polyurethane cured product from the mold; and d) processing the polyurethane cured product to the thickness of a window of a polishing pad.

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WO/2020/212788PARTIALLY SHAPED ABRASIVE PARTICLES, METHODS OF MANUFACTURE AND ARTICLES CONTAINING THE SAME
WO/1995/011111ABRASIVE ARTICLES COMPRISING A MAKE COAT TRANSFERRED BY LAMINATION
WO/2016/027671POLISHING FILM
Inventors:
MIN BYUNG JU (KR)
HONG SEOK JI (KR)
KANG HAK SU (KR)
JUNG DAE HAN (KR)
PARK GI YOUNG (KR)
JANG HYUN IL (KR)
Application Number:
PCT/KR2022/012667
Publication Date:
July 27, 2023
Filing Date:
August 24, 2022
Export Citation:
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Assignee:
KPX CHEMICAL CO LTD (KR)
International Classes:
B24D11/00; B24B37/20; B24B37/24; C08G18/10; C08G18/65
Foreign References:
KR20050050582A2005-05-31
JP2000143763A2000-05-26
JP5240502B22013-07-17
KR101889081B12018-08-16
US20140357170A12014-12-04
KR20220008594A2022-01-21
KR20010002696A2001-01-15
Attorney, Agent or Firm:
KIM, Sung Ho (KR)
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